native number + 개: 사과 세 개
item, piece (general counter for things)
Example
사과 두 개 주세요.
Two apples, please.
Word parts
개 piece
The all-purpose counter: 사과 한 개 = one apple. Different from 개 (dog).
Good to know
When you don't know the right counter for an object, 개 usually works.
Related words